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X2, huge difference between core temps?

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Hi :)

 

Well, this is my first dual core CPU. It's a X2 4200+ LCB9E 0713 RPMW. When I got it I cranked it up to 275*11 with 1.475v and it workes like a charm. Smartguardian reports ~46C after 1 hour of Orthos. But when I check Core Temp it's a different story, core #0 is about 63C and core #1 around 55C. The difference is even worse at idle, 42C vs 30C. Could this be due to one core having bad contact with the IHS? Or how accurate is Core Temp? Should I worry about this and try to pop the lid off? Never done that and I wouldn't want to ruin my "new" CPU.

 

If I did, I would also have to worry about my Noctua NH-U12 braking the core and get some washers to compensate for the heightloss of the CPU. What do you think?

 

Another thing, my PWM temperature hits 56-57C with this CPU, with my old Opteron 144 it never went above 50C no matter what, exactly the same cooling ofcourse. What could be causing this?

 

Thanks!

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I too just got my first duel core cpu, an opty 165. I've been having the same problems. Core 0 reads 40c and core 1 reads 21c at idle even though its like 27-28c in my room. Smartguardian reads 32c. At load I get 52c and 47c on coretemp and Smartguardian reads 41c. I've tried a few versions of CoreTemp but all had the same results. I can't really know if the problem is core temp since I don't know of any other temp monitors that detect the temp of two cores, but since one core is below ambient says that there has to be something wrong with either the sensors, cortemp, or something else. I don't know. I just use smartguardian and hope the core temp delta is normal.

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Well, thanks a lot! Tried to search but didn't find that. Guess I should learn to search better... So there seems to be different several different opinions :confused: Some claim that after popping their IHS off the temperatures has leveled out in Core Temp aswell. But it seems that many has the problem with different temperatures on both cores in Core Temp. Well, it's rock solid anyway, so maby I shoudn't worry about it then and just trust good old SmartGuardian.

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so maby I shoudn't worry about it then and just trust good old SmartGuardian.

 

I agree. I use Core temp (and those like it) to help develop the big picture. Happily my cores on my only dual AMD are close and my Core Temp and SG are also fairly close (closer at load than idle strangely enough). I suppose if they were drastically (what ever that would mean) off I may want to find some cooling improvement. But being the lazy, procrastinating, slob that I am ... if everything were stable and happy ... I probably would not worry.

 

Let's face it, these CPU's are rated higher temps than most of us run them anyway and some people push them for long periods at freaky to me levels. I'm not keeping mine forever anyway so if it's running stable and I don't see smoke. Actually I am much more anal than need be and panic over 50C but I am contemplating the "not seeing smoke and flames" test.:P:p:p

 

For 24/7 on A64 I shoot for a cool, low volt 2.7 and life is good.

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Yep.. It could be mechine defects inside the IHS. or bad paste inside on 1 core. But it could the diodes reading wrong too.

 

If you do pop the top.(Easy does it. Careful of the pins) Be sure beforehand you have good adjustable mounting system lined up. So you can slowly-evenly tighten your sink onto your cores.

 

 

As far as the little chip that gets really hot And reads as motherboard in everest. Put a big fan on your mems that'll cool it off too. If you can fit it around your sink. (Plus your mems will love you for it too.) If the fan won't fit,try a small heatsink. TCCD gets really hot even @2.7 on the lp-b it runs okay though. @2.8 it gives errors without a fan. So I allways put fans on the mems no matter the voltage.. (Any computer I own.) The nf4 has never run without a fan on the mems so I couldn't really tell ya's the deal with it.

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Yep.. It could be mechine defects inside the IHS. or bad paste inside on 1 core. But it could the diodes reading wrong too.

 

If you do pop the top.(Easy does it. Careful of the pins) Be sure beforehand you have good adjustable mounting system lined up. So you can slowly-evenly tighten your sink onto your cores.

 

 

As far as the little chip that gets really hot And reads as motherboard in everest. Put a big fan on your mems that'll cool it off too. If you can fit it around your sink. (Plus your mems will love you for it too.) If the fan won't fit,try a small heatsink. TCCD gets really hot even @2.7 on the lp-b it runs okay though. @2.8 it gives errors without a fan. So I allways put fans on the mems no matter the voltage.. (Any computer I own.) The nf4 has never run without a fan on the mems so I couldn't really tell ya's the deal with it.

 

Well, thanks for your input. I think I will pop the lid off afterall, just to test it out. I thought the 4200+ had 2mb cache, but now I found out it's the 4400+ :( That sucks... Anyway, about the PMWIC, I don't really want to fit another fan there as I'm going for a very silent system. After 5 hours of orthos it reaches 64C though :eek2::eek2::eek2: With my old 144 it never went above 50C, what the hell is up with that? :sad: Is the PWMIC the upper sink of the three near the CPU socket? Can't figure it out by the pictures :confused:

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Well, thanks for your input. I think I will pop the lid off afterall, just to test it out. I thought the 4200+ had 2mb cache, but now I found out it's the 4400+ :( That sucks... Anyway, about the PMWIC, I don't really want to fit another fan there as I'm going for a very silent system. After 5 hours of orthos it reaches 64C though :eek2::eek2::eek2: With my old 144 it never went above 50C, what the hell is up with that? :sad: Is the PWMIC the upper sink of the three near the CPU socket? Can't figure it out by the pictures :confused:

 

It's not a bad glue job on the lid most likely, and probably isn't due to concavity or convexity of the IHS either.

 

I popped the IHS on my Toledo and Core 0 still runs several degrees hotter than core 1. CoreTemp reports about 6-8C higher on Core0 typically. Mine is fully loaded on both cores 24/7 so it's easy to monitor.

 

PWMIC gets much hotter on X2s, especially when you put more volts through them. Point a fan at the area (I have one 80mm which keeps temps under 50). PWMIC can handle higher temps but when you get in the 60s could affect OC stability.

 

Is your 4200+ a Manchester, Denmark or a Toledo according to CPU-Z? I'm guessing that LCB9E = Toledo. Probably was originally slated to be a 165 or maybe 175 but with a bad cache, neutered and sold as a 4200+ with a different multi. I have an X2 3800+ that is a Toledo...i.e. Opteron 165 or possibly 170 with a bad cache. Toledos clock like a mutha.:drool:

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It's not a bad glue job on the lid most likely, and probably isn't due to concavity or convexity of the IHS either.

 

I popped the IHS on my Toledo and Core 0 still runs several degrees hotter than core 1. CoreTemp reports about 6-8C higher on Core0 typically. Mine is fully loaded on both cores 24/7 so it's easy to monitor.

 

PWMIC gets much hotter on X2s, especially when you put more volts through them. Point a fan at the area (I have one 80mm which keeps temps under 50). PWMIC can handle higher temps but when you get in the 60s could affect OC stability.

 

Is your 4200+ a Manchester, Denmark or a Toledo according to CPU-Z? I'm guessing that LCB9E = Toledo. Probably was originally slated to be a 165 or maybe 175 but with a bad cache, neutered and sold as a 4200+ with a different multi. I have an X2 3800+ that is a Toledo...i.e. Opteron 165 or possibly 170 with a bad cache. Toledos clock like a mutha.:drool:

 

According to CPU-Z it's a Toledo indeed. Well, I really don't want another fan so I will try to fit a heatsink onto it instead, if I can find it :confused:

 

It does clock pretty well but doesn't scale good with voltage. With only 1.425V I can get 290*10 rock stable, but not even 300*10 with as much as 1.55V (didn't go higher). At first I thought it was incredibly good, as I could play games for hours @ 310*10 with 1.5V, but it wasn't stable in Orthos for more than 30 sec. Haven't popped the lid off yet, going to try on a 3200+ first, it's cheaper :P AS you say, probably not worth it, but what the heck :angel:

 

Don't like that fact that it only has 1mb cache though, it's slower in everything using only one core than my old 144 and I've discovered that the most games I play doesn't benefit from dual core. So I'm thinking Opteron 165, or C2D... :rolleyes: Or I'll just stay with this as it plays everything I play on max resolutions with as much AA and AF I like, heh.

 

Thanks for your input hawkeyefan :)

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I have found that while under load I can adjust the screws on my dangerden tdx and put the temp of the cores insync with each other.

Being lidless probably helps in being able to do that as well.

 

While idling the first core is always about 5 to 6 celsius higher tho.

Maybe from it running light processes ?

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